Study on the photodissociation mechanisms of m-bromotoluene at 234 and 267Â nm using velocity ion imaging

The Photodissociation dynamics of m-bromotoluene has been investigated using velocity map imaging technique (see figure). Different product channels are observed. One is the promptly direct dissociation via repulsive n → σ∗ transition. The second is fast predissociation processes via π → π∗ transition. Multiphoton dissociative ionization process is also suggested.